2009-2010 Influenza Season Week 8 ending February 27, 2010

2009-2010 Influenza Season Week 8 ending February 27, 2010
All data are preliminary and may change as more reports are received.

Synopsis:
During week 8 (February 21-27, 2010), influenza activity remained at approximately the same levels as last week in the U.S.

263 (6.4%) specimens tested by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories and reported to CDC/Influenza Division were positive for influenza.
Over 99% of all subtyped influenza A viruses reported to CDC were 2009 influenza A (H1N1) viruses.
The proportion of deaths attributed to pneumonia and influenza (P&I) was below the epidemic threshold.
One influenza-associated pediatric death was reported and was associated with an influenza B virus infection. This death occurred during the 2008-09 influenza season.
The proportion of outpatient visits for influenza-like illness (ILI) was 1.7% which is below the national baseline of 2.3%. Two of 10 regions (Regions 4 and 9) reported ILI above region-specific baseline levels.
No states reported widespread influenza activity, four states reported regional influenza activity, Puerto Rico and eight states reported local influenza activity, the District of Columbia, Guam, and 34 states reported sporadic influenza activity, four states reported no influenza activity, and the U.S. Virgin Islands did not report.

abrir aquí:
http://www.cdc.gov/flu/weekly/